Romans 4:19-21—And being not weak in faith, he considered not his own body now dead, when he was about an hundred years old, neither yet the deadness of Sara’s womb: He staggered not at the promise of God through unbelief; but was strong in faith, giving glory to God; And being fully persuaded that, what he had promised, he was able also to perform.
The Apostle Paul makes the case that Abraham is the father of all believers, both Jew and Gentile. Since he trusted in the promise of God and was counted as righteous before he received the covenant of circumcision, he is father of those who have not entered into Jewish ritual but still trust in God. His example clearly shows us that it is not by works that we are made right with God, but by believing and trusting in God. His faith is an example to us all. Even when his body and that of his wife’s were incapable of producing a child, he believed God’s promise that they would have a boy. If God told you that a 100-year-old man and a 90-year-old woman would have a child, would you believe it? Faith believes what cannot be seen or reasoned with the natural mind. Faith pleases God. What has God promised to you? He has promised all believers that He will transform them into the likeness of His Son. You may look at your thoughts and actions today and think it is impossible, but God has promised. Won’t you be like Abraham who looked beyond the natural and was fully persuaded that God had the power to do what He promised? Once you are fully persuaded, begin to act by faith on the promise.